D sus2
The D sus2 chord consists of the D (Perfect unison), E (Major second) and A (Perfect fifth) notes.

How to play the D sus2 chord
- Find D (Root) on the piano keyboard
- Add E (Major second) — 2 semitones above D
- Add A (Perfect fifth) — 7 semitones above D
- Press all 3 notes simultaneously to sound the D sus2 chord